Connected: An Internet Encyclopedia
RFC 1035 - 6.4.3. Inverse query processing

Top: Connected: An Internet Encyclopedia
Up: Requests For Comments
Up: RFC 1035
Prev: 6.4.2. Inverse query and response example
Next: 6.5. Completion queries and responses

### 6.4.3. Inverse query processing

Name servers that support inverse queries can support these operations through exhaustive searches of their databases, but this becomes impractical as the size of the database increases. An alternative approach is to invert the database according to the search key.

For name servers that support multiple zones and a large amount of data, the recommended approach is separate inversions for each zone. When a particular zone is changed during a refresh, only its inversions need to be redone.

Support for transfer of this type of inversion may be included in future versions of the domain system, but is not supported in this version.

Next: 6.5. Completion queries and responses

Connected: An Internet Encyclopedia
RFC 1035 - 6.4.3. Inverse query processing